The pilot episode and introduction of the Thundercats. The Planet Thundera has become very unstable, and has reached the point of
total destruction. The Thundercats manage to escape, and charter a course to a distant planet. During their voyage the ship is
under attack by the mutants, and is damaged. Unable to reach its destination, Jaga, the oldest Thundercat manually drives the ship
to a closer planet, while the rest of the Thundercats sleep in Time Capsules. Jaga, unable to survive the voyage dies, and their ship
crash lands on Third Earth. Lion-O, the hereditary lord of the Thundercats goes from boyhood to manhood during the trip.
The Unholy Alliance
The mutants also manage to land on Third Earth, and they encounter an old pyramid. It turned out to be the home of Mumm-Ra, the
ever-living, and they join forces with each other to possess the Sword of Omens. (Mumm-Ra sinks their space ship, and the
mutants really have no choice but to join with Mumm-Ra). Both the mutants and Mumm-Ra attempt to attack Lion-O to possess the
Sword, but miserably fail.
Berbils
This Episode is the Introduction of the Ro-Bear-Berbils. A Race of robot bears who live on earth. Lion-O and Snarf get trapped in one
of the Ro-Bear traps, but later find they are a friendly species. Mumm-Ra becomes angry that the Thundercats have become allies
with the berbils, and tries to destroy the berbil village. The Thundercats defeat Mumm-Ra. In return for saving their village the berbils
help the Thundercats build their home, the Cat's Lair.
The Slaves of Castle Plunn-Darr
The homeless mutants also make plans to build their home. But it would be impossible for three mutants to do it themselves. They
enslave a primitive race of beings called Brute-Men to do their work for them. The Thundercats go to Castle Plunn-Darr to free the
Brute-Men from the mutants. Panthro also builds the Thunder-Tank in this episode.
Lion-O's Training
In the following episodes, the Thundercats learn more about third earth, and gain new allies. At the same time, the mutants are also
adapting to their new planet. During these episodes, Lion-O is learning how to use his powers, and learning how to rule.
Trouble with Time
The Thundercats, in need of Thundrillium to power their lair and Thunder-Tank, search third earth for another source. Tygra finds an
enormous source of Thundrillium in a cave near the forest. The cave though, makes people age years, in minutes. Cheetara is able
to get Tygra out of the cave because of her amazing speed. Tygra, now hundreds of years older, is at the virge of dying. Willa, their
new ally, tells the Thundercats to take Tygra to The Fountain of Youth, to restore Tygra's youth.
Pumm-Ra
Mumm-Ra disguises himself as a Thunderian in order to get in to the Cats Lair, and ultimately steal the Sword of Omens. He
succeeds, but since the Sword of Omens cannot be used for evil deeds, Lion-O regains the sword, and defeats Mumm-Ra for the
second time.
The Terror of Hammerhand
Snarf helps a unicorn in danger from a evil group of pirates called Berserkers, and gets captured himself. Lion-O seeks out Snarf,
and saves him with the help of the Unicorns, and the Unicorn Keepers.
The Tower of Traps
Wily Kit and Kat save a Wollo from a Robber Baron. The robbers stole the Wollos wedding present for his daughter, and the kittens
go looking for the robbers. They enter the Tower of traps, and overcome many obstacles to get the wedding present back.
The Garden of Delights
Mumm-Ra tricks Tygra into eating a drugged fruit that puts him under Mumm-Ra's control. Mumm-Ra commands Tygra to steal the
Sword of Omens. Since evil spirits cannot use the power of the Sword of Omens, Mumm-Ra gives the sword to Willa, and
persuades her to use its powers to destroy the Thundercats. She agrees but little does Mumm-Ra know that she would not betray
the Thundercats like that.
Mandora: Evil Chaser
Lion-O and Snarf stumble upon a portable jail cell, and mistakenly open it up. Three of the galaxy's worst villains escape. One of
them, a slick thief, manages to steal Lion-O's sword. Lion-O helps Mandora, the inter-stellar police officer that imprisoned the
villains, recapture them, and return them to their cells.
The Ghost Warrior
Two very curious Wollows mistakenly broke the magical seal that imprisoned the ghost of an ancient warrior. Grune the Destroyer.
The Thundercats cannot figure out how to destroy Grune, who begins to spread his terror throughout the villages of third earth. They
find out through Cheetara's sixth sense that Grune was once a Thundercat, and close friend of Jagas. But Grune got greedy and
turned bad. Lion-O summons the spirit of Jaga to defeat Grune.
The Doom-Gaze
Mumm-Ra wishes to obtain the secrets of an ancient power known as the Doom-Gaze. Ta-She, an evil priestess, is the only one
who possesses the knowledge of the Doom-Gaze. Ta-She however, is imprisoned in a time-warp continuum. Mumm-Ra frees her,
and she is able to put all of the male Thundercats under the Doom-Gaze spell. Cheetara, however, is not affected by her spell, and
is able to defeat her and return her to her eternal prison.
Lord of the Snows
The Thundercats were almost out of Thundrillium, when Panthro discovered a meteor falling from the sky through the Cats Lair. It
Turned out to be a fragment of Thundera, and it was pure thundrillium. It lands however on hook mountain, a snowy region which has
been unexplored by the Thundercats. Lion-O seeks out the meteor, and battles the snowman of hook mountain for it. Lion-O's wins,
a befriends the snowman.
The Spaceship beneath the Sands
The mutants ask Mumm-Ra to raise their spaceship which he made sink into a dessert when they first landed on third earth. He
feared the power of their spaceship could destroy his temple. They convince him that the reason to raise their spaceship is so they
can have the weaponry to defeat the Thundercats. He agrees, and they retrieve two Sky-Cutter and one nose diver from the
spaceship's ruins.
The Time Capsule
Lion-O becomes homesick, and his memories of Thundera are almost nonexistent. Jaga appears to Lion-O and tells him that on
their spaceship, they brought with them a time capsule which was basically a digital recording of Thundera, and its history up to the
time it was destroyed. The Thundercats set out to search for their time capsule.
The Fire's of Castle Plunn-Darr
The mutants, once again searching for a way to destroy the Thundercats, recover some more items from their spaceship which
Mumm-Ra generously recovered for them. They take their ships engine and convert it into a giant fire-ball-shooting machine. The
mutants terrorize third earth with their fire-balls, until the Thundercats go to castle Plunn-Dar and destroy their dangerous new
weapon.
All that Glitters
Mumm-Ra tricks Tygra and Lion-O into fighting each other, and Tygra's Bolo-whip destroys the sword of omens. The only way to
reforge the sword is in the heat of a star, and coincidentally, there was a dwarven star buried deep in one of third earths volcanoes.
Lion-O insists on reforging the sword himself and emerges into the depths of the volcano. The other Thundercats summon a fire
demon who lives inside the volcano to do it for them, and after doing the demon a favor, he turns on them and keeps the sword for
himself. Lion-O recovers the sword, and destroys the mercenary.
Spitting Image
Mumm-Ra creates device that can make Panthro clones. He embeds the spirit of Hammerhand into his clone and set it free to
destroy third earth. The third earth inhabitants blame the Thundercats for the terror because they think its the real Panthro
destroying their villages and burning their crops. The real Panthro finally encounters his clone and with the help of Lion-O, manages
to destroy it. Enraged about his defeat, Hammerhand destroys Mumm-Ra's cloning device.
Lion-O's Anointment (5 part series)
Part I (The Trial of Strength)
On Lion-O's 20th birthday, he must pass a set of trials to become the true Lord of the Thundercats. Even though he is the hereditary
Lord of the Thundercats, he has not proven himself to be worthy of that title. His first test is to beat Panthro in a dual to test his
strength.
Part II (Trail of Speed)
On the second day of his trails, he must race Cheetara through the dangerous lands of third earth. Although Cheetara is by far the
fastest among the Thundercats, her speed can only last for a short time period. After that, she can run as fast as any other
individual. Lion-O takes a shorter, but more dangerous route to make up for Cheetara's advantage.
Part III (Trial of Cunning)
Wily Kit and Kat stand in Lion-O's way on the third day of his trials. Lion-O must beat them through the maze of infinity. Attempting
to stop Lion-O and slow him down, the kids set traps in the maze. He manages however to avoid their traps. In order to beat them
through the maze, Lion-O plays their own tricks on them, and tricks them into losing the race through the maze.
Part IV (Trial of Mind Power)
The scene changes to Hook Mountain, where Lion-O must beat Tygra at a test of mind power. The Tiger Clan on Thundera were
given special mind powers that enable them to produce illusions to their enemies. Lion-O must be able to distinctly separate the
real from the unreal. Lion-O is clever enough to see past Tygra's illusions, and is able to earn his Thundercat insignia during day four
of his trials.
Part V (Trial of Evil )
Finally, to prove that Lion-O is worthy to be the Lord of the Thundercats, he must defeat his worst enemy. Mumm-Ra. He manages
to find a way into Mumm-Ra's tomb, and defeats him by throwing his coffin into the evil cauldrum. This is the first time that Lion-O
really defeats Mumm-Ra.
Adventures on Third Earth
Mongor
Wily Kit and Kat accidently free an ancient monster that was banished to an old shine centuries ago. The evil monster, Mongor,
begins to destroy the planet, and is much stronger than the Thundercats. He captures all the elder Thundercats with his powers.
Wily Kit and Kat return to the shine to find a way to destroy him. They report back to Lion-O and tell him that in order to destroy
Mongor, he has to fight the monster without looking at it. Lion-O defeats the monster and all is returned to normal.
Return to Thundera
The Thundercats briefly show Lion-O how the time capsule they recovered from the caveman works. Curious to see more, Lion-O
activates it during his night-time watch, and gets caught in it nuclear projection rays. The rays send him back in time to Thundera,
just before the final tremor that destroyed the planet. Meanwhile, the mutants have built an evil robot monster that is destroying the
cats lair, and the other Thundercats. Back on Thundera, Lion-O encounters his father, Claudus, and saves him from a mutant
attack. In return, Claudus gives Lion-O the plans to the robot that was destroying the Thundercats in his own time.
Snarf Takes up the Challenge
The Thundercats, fooled by Mumm-Ra and the mutants, manage to get caught. All except Snarf. Being the only Thundercat left,
Snarf goes off to save them. His abilities to talk to the wild animals of third earth were his aid on his rescue. Mumm-Ra and the
mutants underestimated Snarf's capabilities, and suffered when Snarf was able to free the Thundercats.
Mandora and the Pirates
Mandora, on space-patrol, encounters an old pirate ship which doesn't meet inter-galactic standards. She boards the ship, arrests
the pirate, and sends the ship to a space prison. Little does she know that she has boarded the Jolly Roger, the home of the evil
pirate Cracker. Mandora is captured by the creature. Lion-O intercepts one of her distress calls, and must go into space to save
her. She sends her bike to third earth by remote control, and Lion-O goes after her.
The Crystal Queen
The Thundercats think that Snarf is getting too old, and that he is not up to doing as much as he is. To prove them wrong, Snarf
saves the Thundercats from another mess. The evil crystal queen, Tartara, captures the Arrietta bird, whose songs enchant the
berbils harvests. Lion-O, upset with her selfishness go off to save the bird, but gets caught, and put under an evil spell. Snarf,
managing to slip through the crystal queens defenses, saves Lion-O and frees the Arrietta bird.
Safari Joe
An evil hunter lands on third earth in search of prey to hunt. His holographic machine can tell him about all of the Thundercats,
including their strengths and weaknesses, and he is able to hunt down each one of them and put them in Thundrainium cells. He
captures all of them but Lion-O and Snarf. Jaga warns Lion-O about Safari Joe before he sets out to save his comrads, and Lion-O
is able to defeat him and release his friends.
Return of the Driller
Driller, Mumm-Ra's servant who captured Panthro for him in Spitting Image, returns to aid Mumm-Ra once again. His job this time is
to drill a hole from the Cat's Lair to the Acid lake, allowing the acid to flow in and eat away at the lair. The Thundercats set out to
find the one substance that neutralizes the acid.
Turmagar the Tuska
An evil robot monster is attacking the Tuska Village, in an area unexplored by the Thundercats. Turmagar, the leader of the Tuskas,
travels to the Cat's Lair to ask for aid in defeating the Techno-Pede robot which is destroying his village. The Thundercats agree to
help Turmagar, and set out to the Tuska Village.
Sixth Sense
An alien spaceship crash lands on third earth, and it can somehow communicate with Cheetara through her sixth sense. She
becomes a part of the spacecraft, and begins to feel what it feels. The mutants recover the space ship, and begin tampering with
(damaging) it. Little do they know that it is not only affecting the spaceship, but it is affecting Cheetara. In order to save Cheetara,
the Thundercats set out to recover the space ship from the mutants, and fix it.
Dr. Dometone
In old scientist seeks the Thundercats to help him save the oceans of third earth. Long ago, a crack was made in the bottom of the
ocean which caused the water to drain into the earth's core. Dr. Dometone created a plug which sealed the hole in the ocean, and
saved third earth from destruction. Now, an evil plundarian, Scrape, has come to third-earth to remove the plug and mine the rock
that is found on the bottom of the ocean. A rock that powers his planet - Blue Plundar. The Thundercats join Dr. Dometone and his
frog-type robot Hercie to save the planet from total destruction.
The Astral Prison
Jaga is captured by Nemex, an evil being in the Astral world, and Lion-O tries to find a way to rescue him. Third-earth legend says
that the only person who can transport anyone to the Astral world is the evil Nether-Witch. Little do the Thundercats know that
Mumm-Ra and the Nether-Witch are one and the same. Mumm-Ra traps Lion-O in the Astral world, and Lion-O sets out to save
Jaga. While escapeing the Astral prison, Lion-O and Jaga save an old sorcerer named Brodo whose been imprisoned in the Astral
Prison for centuries. As a thank you gesture, Brodo sends Lion-O back to his own dimension.
Queen of 8 Legs [Spidera]
Dimension Doom
The Rock Giant
The Thunder-Cutter
Mumm-Ra summons the great samurai Hachi-Man to seek and destroy Lion-O. He tells Hachi-Man that Lion-O and the
Thundercats are destroying his planet. Hachi-Man and Lion-O confront each other, but their swords refuse to draw on each other.
They become allies and hope to destroy Mumm-Ra together. Enraged, Mumm-Ra summons another warrior, a ninja, to sabotage
the Thundercats, and retrieve Slithe whom they have captured.
Mechanical Plague
Panthro invents flying video cameras which are suppose to record the events that take place on third-earth so they could create
their own holographic time capsule. Mumm-Ra, in hope of destroying the Thundercats once more, revives the great mechanical
monsters which the Thundercats have destroyed in the past to attack them. He revives the Mutant War robot, The Driller, The Giant
Insect, and the Techno-Pede.
The Demolisher
A vagabond space traveler lands on Third Earth to challenge Mumm-Ra to a fight. The Demolisher is victorious against Mumm-Ra
and sends him running back to his Tomb. Mumm-Ra acknowledges the power of the Demolisher, and convinces him to seek and
destroy Lion-O. The Demolisher, searching for another fight gladly accepts Mumm-Ra advice. He battles with Lion-O only to face
defeat.
Feliner (2 parts) [first Snarfer]
Vulture-man summons Ratar-O to take him to the planet of the Snarfs to capture one of them and use it as ransom with the
Thundercats. Snarf (Osbert J), thinking his entire race was wiped out when Thundera blew up finds out that they have captured
Snarfer, his little nephew. The Thundercats set out to find the mutants and save Snarfer. After successfully saving Snarfer, the
Thundercats are faced with the problem of returning Snarfer to his planet. Panthro cleverly invents the Feliner, the first Thundercat
air-ship. In order for it to work though, the machine need a hyper-space mega-condenser. Snarf reminds him that there is one on
Ratar-O's Ratstar. The Thundercats once again persue the mutants to the wreckage site of the Ratstar to "take" their
mega-condensor.
Excalibur
The Ancient spirits of evil show Mumm-Ra the story of King Arthur, and explain to him that the strongest sword that ever existed
was Excalibur, Arthur's weapon. Mumm-Ra disguises himself as Arthur, and returns to lake where the sword is guarded by the lady
of the lake. Fooled by his disguise, the lady gives Mumm-Ra Excalibur. The disguised Mumm-Ra challenges Lion-O to a dual, and
Lion-O foolishly accepts the challenge. The sword clash, and Excalibur is victorious. The eye of Thundera is split in two, and the
Thundercats become powerless. Merlin, Arthur's teacher and a famous magician stops Mumm-Ra from destroying the Thundercats,
and restores the eye to its original state.
The Secret of the Ice King
An old iceburg on Hook Mountain begins to melt, and encased in it is an ancient being known as the Ice King. He begins to destory
Snow-Man's caslte at the top of Hook Mountain, and frezzes Snow man in solid ice. Snow-Meow, his faithful compainion seeks out
Lion-O to do away with the being and save his master. Lion-O fails, and is also frozen. Once again Snow-Meow sets out to find the
other Thundercats. They arrive only to face defeat, and Cheetarah is the only one to survive. She uses the sword to restore Lion-O
to normal, and he in turn restores everyone else. They discover that the Ice King is looking for an ancient egg to see his wife, the
Queen one last time before he dies. They understand his madness and assist him in finding the egg.
Sword in the Hole
Mumm-Ra hires Captain Schiner no send a fake distress signal to the Thundercats. With their new vehicle, the Feliner, the
Thundercats set out into deep space to help the "ship in distress". When they arrive, Schiner captures Lion-O, and the sword of
omens. He gives the sword to Mumm-Ra, and Mumm-Ra throws the sword into a black hole. Cheetara returns to third earth to get
Panthro, in an attempt to save Lion-O. They do rescue Lion-O, and seize Schiner's ship. Panthro sets a course into the black hole
to recover the sword. They enter, and must battle the robotic city of lost space ships to recover the sword of omens, and escape.
The Wolfrat
Good and Ugly
Divide and Conquer
Vultureman invents a voice imitator which can imitate ANYONES voice. The mutants use the invention to trick the Thundercats into
falling for false distress calls. They go on the communication frequency that the Thundercats use and pretend to be Thundercats in
danger. Each Thundercat is lured into a different danger zone of third earth. Wily Kit and Kat get trapped in the Vortex, Cheetara in
a giant bee hive, Tygra in Mole-masters hole, and Panthro gets captured by the mutants. Liono and Snarf go off to save them once
again, and put the mutant scheme to an end.
Micrits
Micrits, a tiny race of human like figures happen to live right outside Cats Lair. Unaware of their existance, Lion-O manages to
continuously step on their village (keep in mind they are the size of toy figures) and destroy their homes. Upset at this disrespect,
the Micrits decide to take a stand and manage to trap Lion-O. With the Thundercat Lord in trouble, the mutants attack Cats Lair.
After much talk, Lion-O manages to convince the Micrits that he is a "good guy" and convinces them to let him go to help save his
friends. Once again, Lion-O saves the day, and befriends the Micrits.
The Super Power Potion
Vulture-man invents a potion that turns him into the most powerful being on third earth. He becomes so powerful that he even
challenges Mumm-Ra's power and wins. He becomes so powerful that if the Thundercats don't stop him, he WILL be the supreme
ruler of third earth. Luckily, the mutants fight over the super power potion, and end up destroying the vile.
The Evil Harp of Char-Nin
Wily Kit and Kat find an ancient Harp that has a genie in it. His name is Char-Nin. Mumm-Ra appears to the genie and tells him
that if he destroys the Thundercats, he will be freed from his eternal prison in the lamp. Foolishly, Char-Nin agrees, and begins
trapping the Thundercats in his lamp one by one. Mumm-Ra's plan works, and he betrays Char-Nin. During their arguing, the
Thundercats manage to escape, leaving Mumm-Ra and Char-Nin battling beneath the earth.
Tight Squeeze
Monkian's Bargin
Out of Sight
Jackalman's Rebellion
The Mountain
Eye of the Beholder
The Mumm-ra Berbil
Trouble with Thunderkittens
Mumm-rana
The mutants fail to destroy the Thundercats in an aerial assault and find themselves stranded on a far part of third earth inhabited by
the good Mumm-Rana. She is suppose to be the exact opposite of Mumm-Ra, serving the ancient spirits of goodness as opposed
to the ancient spirits of evil. Somehow Mumm-Ra shows up on the scene and puts her under a spell where she must serve him.
These two now evil Mummies plot to destroy the Thundercats and rule third earth side by side as King and Queen.. Surprise
surprise good always pevails, and the Thundercats manage to turn Mumm-Rana back to her good self, and banish Mumm-Ra once
again.
